Liquid handling apparatus



Feb. 6, 1945. P. w. CRIST ET AL LIQUID HANDLING APPARATUS .Filed bed. 31, 1942 I INVENTORS R m CRIS T 5.6} JOHA zvsson NVE/Y TOR Patented Feb. 6, 1945 LIQUID HANDLING APPARATUS Philip W. Crist, Roselle Park, and Sven G. Johansson, Cranford, N. J., assignors-to Western Electric Company, Incorporated, New York,

N. Y.', a corporation of New York I .Application December 31, 1942, Serial'No. l70,889

3 Claims. (Cl- 259-94) This invention relates to liquid handling apparatus, and more particularly to apparatus for churning a liquid suspension of finely divided solid matter and presenting a continuously flowing portion thereof of uniform consistency for removal in small quantities'for use.

There are innumerable instances in various arts where use is made of finely divided solid matter suspended in a liquid and having a more or less great tendency to settle out of the liquid when allowed to remain undisturbed. For example, in the manufacture or the silver coated sections of crystalline quartz employed in various forms of high frequency electrical apparatus, it is sometimes the case that it is necessary to provide an extra thickness of silver in the silver films or coatings over a small and carefully located portion of the area of'a film, to which thickened portion of the film a connector wire is to have its end butt-welded or soldered. This may be done by dipping a predetermined length of the end of the connector wire'into a suitable liquid suspension of finely divided metallic silver with an admixture of powdered lead borate in a suitable vehicle,-and then applying the end of the wire carrying a modicum of the silversuspension adherent thereto, to'the pre-selected'location on the quartz plate, and applying'heat to fuse the silver to the quartz by the action of the lead borate. Obviously, it is highly preferable that the pool, reservoir or stream ofthe suspension into which the wire end is di ped, shall be of.

uniform consistency at each repetition of the operation in order that the resultant joints may be uniform;

An object of the present invention is to provide a device to contain a body-of liquid and to churn and circulate the same in such fashion as to present a circulating portion thereof of uniform consistency, and having means whereby the churning action maybe-interrupted atwill when 'it is desired to remove a modicum of the uniform suspension 'from the circulated portion thereof. A

With the above a d other objects in view, the I invention maybe embodied in a device comprising a reservoir to contain a, bodyof liquid and formed with a channel external toone" wall thereof, means within the reservoir to both churn the liquid and to circulate a stream of theliquid from and back to the main body of liquid through the channel, and controllable means to actuate the churning and circulating means.

Other objects and features of the inventio will appear from the following detailed descrip- 'l I. i I 1 The outer face of the plug It bears an integral or rigidly attached extension or tenon 25 fittable,

tion of one embodiment thereof taken in connection with the accompanying drawing, in which; the same reference numerals are applied to identical parts 'in the several figures and in which Figure 1 is a view in side'elevation andpartly in vertical section of an apparatus constructed in accordance with the invention;

Fig. 2 is a section on the line 2-2 of Fig. 1;

Fig. 3 is a partial plan view of'the portionindicated at 3-3 in Fig. 1; i

Fig. 4 is a view similar to a part of Fig. 1 of a modified form; and 1 Fig. 5 is an enlarged section on the line 5-5 ofFig.3.' a I Considering now particularly Figs. 1, 2 and3, the apparatus comprises a reservoir 10, here shown as a hollow cylinder or tube, closed at' its right end by a screw plug H and at its left "end by a flat, slantingly transverse wall 12. Near the tip of the ovally rounded point thus formed at the left end; of the upper side of the cylindrical its inner end as indicated at It. Along thetop of the reservoir is secured achannel' member. ll

defining a longitudinal, laterally enclosed passageway or channel l8, which communicates with the interior chamber l9 of the reservoir III at the right by means of an aperture 20 in the reservoir wall. At the left, the endof the member I! overhangs the dish l5 of the aperture M to allow the channel l8 to communicate .with the chamber l9 through the aperture l4 also. Preferably the member I1 is drawn down into a nose 2| to provide a vertically narrow and laterally relative wide outlet of the channel ll to the aperture l4, so that liquid passing fromthe channel into the dish l5 will flow in a thinhorizontal sheet.

A churning member 22, in form like a deeply concave-convex lens, is located within the chamber l9, transversely across thesame about at the middle thereof, with its convex-face to the left.

annular passage 23 between the member 22 and the wall of the chamber I9. The member 22. is rigidly mounted on theleft end of an axial stem 24 whose right end is rigidlyattached to theplug into a corresponding recess formed in a block or armature 26 of magnetic material, and removably secured in place by a jam screw 21, The

block 26 is rigidly mounted on the upper end of a relatively stiff, spring support 28 whose lower:

end is rigidly mounted in a block 29'secured on the upper face of a turntable 30. The turntable 30 in turn is rigidly secured on the upper end' of a vertical shaft 3 l rotatably supported in a suitable base member32. A coil spring 33 tends to turn the shaft 3| andtherewith the table '30 counterclockwise as seen from above. The turn-,

table is provided with a handle lever 34 by which source v(notshownlpfsuitably alternating or pulsating electrical current A lever arm 39 rigidlyisecuredton the table 30 by means of the magneti35, servesto actuate the control button or member :40 of theswitch 38. The switch device 38 is so arranged;that,- when no force" is exerted: on': the handle 34 and the spring 33 .is free:to3act,-the lever: arm 39Vwill then press against the button 40 to'actuate the'latter to close the, circuit :through the, winding 31. of the magnet, and when the arm 39:iszmoved away from the button 40 bymanual'or other pressure on the lever 34, the circuit through themagnet churning and pumping actions. *itmay bepreferred'as shown in Fig. 4, to carry swings back to the position shown and the churning and circulation of the, liquid are resumed. Where the specific gravity of the liquid in .question is relatively high, the arrangement as above described may be preferred. However, if both the liquid and its solid burden are light, they may partake of the vibration-of the reser voir and thus diminishtheeffectiveness of the In such case the stem l 2 4;of the member 22 through the screw plug H] and attach it rigidly to the pol I36 of the magnet" 35. --In'- operation, the member 22 will thenbe' held stationary while the reservoir l'andits'contentsare moved to and fro rela- Other; modifications and adaptations may well closed while still remaining within the spirit and I be made from the illustrative embodiments disscopeoftheinventi'on ,as I pointed out and described-tin ythe appended claims.

' What is claimed is-:,-, i

r 1. -'Apparatus =to "cont ain a-bodyof liquid and tochurn the same and to present accessibly a circulated portion thereof of e uniform consistency, the said apparatusv comprising a reservoir to contain abodyof liquid in=the chamber thereof and formed withadish in; the outer surface 7 of the top Wallthereofand communicating with Winding, wilkbe'interrupted until the button 4!} r is-againipressedbythe arm-39. I c Hence-when the apparatus is as shown inFig. 1,'*th,e zmagnet having its winding continuously fed with, alternating, or pulsating current, exerts apulsatingettraction onfthe armature-26 which 1' ishthuscaused to have a rapid vibratory motion unit elastic. support 28.; The reservoir I0 is thus giventhe same vibratory motion,,being reciprocated' rapidlyto and ir in the direction of the said chambenand further formed-pwitnan enclosed channel communicating between the said chamber and-V thesaid dish, a -churning -and pumping member positioned inthe said chamber, and means to reciprocate-the reservoir to cause the member :tor churn the liquid and pump the same't-o-circulate through'the channel. and. the

dish. I e

2. Apparatus to contain. abody-ofliquid and to churn the'sameandto present-accessibly a circulated portion thereof of 1 uniform consistency,

the said app'aratuscomprising. a reservoir to containa-bodyof liquid in-the chamber thereof and formed with ,adish in the-outersurface of the its: axis,:togctheriwithsthe combination churna:

ing-:andpumping member 22. The reservoir 10 is 'filledztwiththe liquid in question, preferably tofabout" the :level indicated at M. Owing tothe inertiaiofrthe bodyxof liquid, the effect of the top wall thereof; and communicating with the saidchamber-t-and further formed with an enclosed channelcommunicating between the-said vibratoryimotion" ofthe reservoir I0 and member 22: is to churn the'liquid thoroughly and also, because! of theqconcavo-convex shape of' the member 22, to propel or 'pump'theliquid as indi'cated by the arrows; This-causes the liquid to bekept thoroughly: mixed and to be continuously circulated, as indicated, from the chamber 13, up through. the aperture 20, up alongithe channel l8; and outfrom under the nose 2| in a flat thin uniform sheet to theaperture l4, and so back into the chamber I9.

gWhen it is desired to clip a .stylus, wire end, or other. like member. into the liquid to pick up, a ,predeterminedly :constantamount; of liquid .of uniform consistency, the lever 34 is pushed (away tion of the device is thus-halted; but the flow of liquidfrom ,,under the nose 2| continues, be-v cause of the inertia of v the circulating; liquid, long enough, to keepqthe dish I5 full-until the end "f the stylus, wire or the like can be clipped and v removed, On releasing the lever 34, the table chamber and the said dish; a-. churning. and pumping member positioned inthe said chamber, and means to-reciprocate the reservoir relatively to themembergtoacause the -member tochurn the liquid and pumpathe sameu to H circulate through the channehand' the; dish.

3. Apparatus to contain agbody of liquid and to churn the sam and to present accessibly a ci'rculated portion thereof of uniform :c,ons istency,

the said apparatuscomprisinga reservoir to con- .tain abody ofv liquid thechamberethereof and; formed with a di sh in -the,outer surface .of

the top wall thereof and communi'catingwith the said chamber andfurther .formed with an enclosed .channel communicating between the said chamberand the saiddish, aIchurningsand a pumping member positioned in the said chamber, ir m th beholder irLFig. 1).; The strong vibra- .1

. and-means to reciprocatethe ;reservoirandtth'e member to cause, the member .to-churn the, and pump the same tog circulate through .the

channel enema-sissy, s

. v .1 PI-I ILIP-W.CRIST., j

. visifrs'tr'tor;.ropzzm;ssou; 

